clean-up to remove apparently unused PORT ENV (related to FINERACT-762)

This environment variable is actually never used.  The port of a Tenant
DB instead appears to be read from schemaServerPort of the
tenant_server_connections table.

fineract-provider/src/main/java/org/apache/fineract/infrastructure/core/boot/JDBCDriverConfig.java

@@ -30,40 +30,25 @@ public class JDBCDriverConfig {
     private final static String DRIVER_CLASS_PROPERTYNAME = "DRIVERCLASS_NAME";
     private final static String PROTOCOL_PROPERTYNAME = "PROTOCOL";
     private final static String SUBPROTOCOL_PROPERTYNAME = "SUB_PROTOCOL";
-    private final static String PORT_PROPERTYNAME = "PORT";
 
     private String driverClassName;
     private String protocol;
     private String subProtocol;
-    private Integer port;
 
     @Autowired ApplicationContext context;
 
     @PostConstruct
     protected void init() {
-        Environment environment = context.getEnvironment() ;
-        driverClassName = environment.getProperty(DRIVER_CLASS_PROPERTYNAME) ;
-        protocol = environment.getProperty(PROTOCOL_PROPERTYNAME) ;
-        subProtocol = environment.getProperty(SUBPROTOCOL_PROPERTYNAME) ;
-        port = Integer.parseInt(environment.getProperty(PORT_PROPERTYNAME)) ;
+        Environment environment = context.getEnvironment();
+        driverClassName = environment.getProperty(DRIVER_CLASS_PROPERTYNAME);
+        protocol = environment.getProperty(PROTOCOL_PROPERTYNAME);
+        subProtocol = environment.getProperty(SUBPROTOCOL_PROPERTYNAME);
     }
 
     public String getDriverClassName() {
         return this.driverClassName;
     }
 
-    public String getProtocol() {
-        return this.protocol;
-    }
-
-    public String getSubProtocol() {
-        return this.subProtocol;
-    }
-
-    public Integer getPort() {
-        return this.port;
-    }
-
     public String constructProtocol(String schemaServer, String schemaServerPort, String schemaName) {
         final String url = new StringBuilder(protocol).append(":").append(subProtocol).append("://").append(schemaServer).append(':').append(schemaServerPort)
                 .append('/').append(schemaName).toString();

fineract-provider/src/main/resources/META-INF/spring/jdbc.properties

@@ -20,7 +20,6 @@
 DRIVERCLASS_NAME:org.drizzle.jdbc.DrizzleDriver
 PROTOCOL:jdbc
 SUB_PROTOCOL:mysql:thin
-PORT:3306
 
 fineract_tenants_driver:org.drizzle.jdbc.DrizzleDriver
 fineract_tenants_url:jdbc:mysql:thin://localhost:3306/fineract_tenants